What it all boils down to in the end with lawn mowers, electric vs. petrol, you have to be educated enough about what you want and need to make the choice.
If you're looking for an environmentally friendly electric mower you may want to check out the Cub Cadet CC-500 BAT cordless electric lawn mower. This mower is quiet and needs very little maintenance compared to a gas mower and is well built and clean running. As it is cordless it can be used away from any power outlets unlike a corded electric mower that can only be used as far away as the cord can extend.
If you are looking for an easy to use, gas powered, self propelled lawn mower the Husqvarna 5521CHV may be right for you. The AutoWalk system is easy to use and allows you to set your own pace rather than having to push the mower. ideal for people who find pushing a mower difficult. With six cutting positions, adjustable between one inch and three inches, and a triple bagging system it will deliver an efficient tidy cut.
Watering requirements for your lawn will depend on a lot of different factors and will vary considerably from lawn to lawn and area to area. In general, in the hot summer months, lawn made from bluegrass or ryegrass will need about 2¼ inches of water every week. less in cooler weather. If your lawn is made from fescues less frequent watering is needed as this type of grass has a deeper root system and can store more moisture between waterings.
In the fall the cutting height of your mower should be gradually lowered in order to begin the winter with no tender young grass that will be susceptible to disease. In addition young grass will be vulnerable to drying out in the cold winter winds leaving you with a brown lawn. Lower the cutting height in steps so that the grass is gradually cut shorter or you may damage the turf by removing all the green growth.